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Rebuilding tecumseh carb/w plastic is the spring reattached ( spring that's on the bar that holds the float )

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Posted on Jan 02, 2017

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SOURCE: mower surging

let it surge, it will usually get better as it warms up. These 6.5 Hp engines are fine except they have an cheap badly designed carburator. Nothing can be done about this problem. They all surge eventually.

Posted on Jun 16, 2009

  • 151 Answers

SOURCE: How to set up a carb with 31840 rebuild kit

what exactly do you want to know? Carb. mixture settings are as follows: L-head engines

Tecumseh carbs.........mainscrew 1 3/4 turns idle screw 1 1/4 turns
Walboro carbs........... mainscrew 1 1/2 turns idle screw 1 1/4 turns

L-head and OHV heavy duty engines 1 turns for both

Posted on Dec 27, 2009

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SOURCE: Float spring on tecumseh Carb.

Ok, that pin is the needle valve. It should move freely, and the spring should attach it to the float. When the carburetor bowl is full, the float pushes that pin up to shut off the gas flowing into it. Otherwise, it would continue to dump fuel into it until it overflows, and you would have gas all over. The engine draws gas through the jet in the bottom of sump that you see sticking into the bottom of the bowl(this likes to get plugged up and keep your engine from running) The spring just kind of sits in there so that if the float moves, it will pull down the pin as it moves.

Posted on Feb 01, 2010

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SOURCE: Engine part for Tecumseh 6hp 195cc

The float and pin can be bought as a repair kit., and replaced.

Posted on Mar 24, 2010

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SOURCE: I have a Toro 524 with Tecumseh engine, model

The high speed mixture screw is initially set at 1 & 1/2 turns out. Then adjust it to give good acceleration and top speed, while not closing the screw more than you need to. The low speed mixture screw is set at 3/4 of a turn out. Adjust that, to give a smooth idle. The 3rd screw, the idle speed screw, is set to give a low idle speed without stalling.

Posted on Jan 15, 2011

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Carb will not prime

Is the float stuck or the little finger that the float works up and down not working. Mine the float worked but the little spring that holds the finger came off and it would not work.

Oct 14, 2014 | Tecumseh Garden


How to rebuild a Tecumseh Carburetor

You can read this article at Jacks Small Engines as well.
Tecumseh Carburetors are fairly simple units. The float model carbs are easy to rebuild/repair. Before you start, one thing you will need is a factory repair manual.
There are some common problems with carburetors that should be checked before you start a rebuild. Many times the following items will correct the trouble your engine is having. You will still need a repair kit to replace certain gaskets and seals that should be replaced whenever disturbed.
One of the more common problems is the flooding of the carb. If this is your complaint check the float first. Remove the float bowl, float pin and remove the float. Be careful that you do not loosen the float needle valve. Now shake the float and listen for gas inside. If the float sloshes, replace it with a new one. Replace the float needle valve seat and adjust the float per the factory manual. Replace the float bowl gaskets.
If you are experiencing performance problems and suspect the carb, you will have to remove it from the engine to correct the problem. After the carb is off the engine there is one thing you need to check before going any further. Remove the float as above. Now hold the choke and throttle butterflies so that you can shake the carb without them making a sound. Shake the carb and listen for it to rattle. If you do not hear the rattle, the emulsion tube is stuck. This tube is sealed into the body of the carb during manufacturing and can not be replaced. The carburetor will need to be replaced. Also if the aluminum body of the carb is corroded inside, any rebuild will only be a temporary fix. Once the corrosion has started it can not be stopped.
If everything checks out up to here, a rebuild and cleaning should fix the carb. However there is one more tricky thing you will need to do. You must remove the welch plug on the side of the carb. This can be done by driving a sharpened small punch or screw driver through the plug and popping it out. Take extreme care when doing this procedure. There are two jets cast into the carb body under this welch plug. If you damage them the carb will have to be replaced. With the welch plug removed and the main jet(in the bowl nut) out the three holes that need to be cleaned are exposed. Using a piece of soft tag wire clean these holes. Now clean the complete carb with carb cleaner.
Re-assemble the carb. Make sure that the needle valve seat is completely down into its bore. After driving in the new welch plug, paint it with finger nail polish to seal it. Adjust the float height using a #4 twist drill as directed in the repair manual.
Now that your carb is rebuilt don't drop the ball on the 90 yard line. Replace the gaskets between the carb and the engine, and the carb and the air cleaner. One common mistake made is to fail to replace the fuel line between the carb and the fuel filter/tank. If the carb was full of dirt or varnish the fuel line will also be. Plus when the carb or fuel line is removed, the inside of the hose usually is damaged. Small fragments of hose materials can break loose and flow into the carb. This will ruin the job that you just completed.
After the carb is remounted to the engine it must be adjusted correctly. You will need a repair manual to do this. Remember that the idle circuit must be adjusted first. Without the idle circuit working correctly you will never get the main jet adjusted correctly

on Jan 14, 2010 | Garden

1 Answer

Problem with Tecumseh oh160 carbeurator




Dec 18, 2013 | Garden

1 Answer

I have a toro push mower model 20016 with a 6.5 hp. tecumseh that wont fire. it has new gas,spark plug ,air filter, please help, thanks, clevi

First, check for spark. Pull the plug and attach the plugwire. Touch the threads to metal on the engine and pull the rope. If there isno spark, check to make sure the coil ground wire (found under the engineshroud attached to the side of the coil) is not grounded somewhere. To checkthe coil, pull off the engine shroud (also known as the blower housing), thenpull the thin black wire (not the thick black wire that connects to the plug) offthe side of the coil. This is the kill wire. Using the above procedure, checkagain for spark. If there is no spark, replace the coil. If there is spark,your problem is in the engine shut off circuit. The kill wire is grounding outsomewhere.
Note that over 90% of no start conditions on small engines are caused by fuel starvationand not lack of spark. Tecumseh's are notorious for having carb problems. Ifyour engine has a carb with a plastic float bowl, remove the bowl and clean itout and then replace the two O-rings in the bowl. One goes behind the drainscrew (or fuel shut off solenoid in some cases) and the other goes on thestand-pipe that protrudes out of the bowl. You can find a breakdown of the carbat a place like e Replacement Parts, etc. Look at the breakdown and you willsee the O-rings, stand pipe, and two springs, which must go back in the bowl inthe correct order.

If you have an aluminum float bowl, remove the carb, remove the bowl, take thescrew that holds the float bow on and hold it up to the light. There should betwo holes there and you should be able to see daylight through them. IF not,they are clogged. Take some fine wire (less than .020 in diameter) and cleanout the holes. Then make sure the main jet is not clogged. It is located on thebottom of the carb body and is inside the threaded hole that the float bowscrew \screws into. It not clean, clean it out. Make sure the float bowl isclean and that there are no minute holes it. Hold it up to the light and checkfor daylight. There should be none.

Put the carb back on and try to start the unit. If it still won't start, then Isuggest a carb teardown, an eight hour soak in solvent and rebuild the carb.Kits are available at your local small engine shop.

May 07, 2011 | Toro Lawn Mower With Toro Power Tools

1 Answer

Have 1200 cc cone shovel HDw/bendix carb. Leaks (drips) all over pipes when ideling. Now have rebuild kit. Never done this before. Need step-by-step. Thanks.

If you're talking about the carb leaking, in addition to the stuff the Kel1guy2002 told you to check, check a few other things as well.

Check the bottom of the float bowl. They are notorious for cracking due to someone overtightening the large brass "nut" on the bottom of the bowl. It's not actually a "nut" but the it is the Main Jet. But it holds the float bowl on and overtightening can cause a crack in the bowl.

Next, it the postion to the spring on the float. It's very confusing to get this spring positioned correctly and even more confusing trying to tell someone how to do it. In this case, a picture is indeed worth a thousand words. This spring helps hold the float in the up position in order to dampen the bouncing of the float while the bike is in motion.

Jun 15, 2010 | Harley Davidson FXDL - FXDLI Dyna Low...

1 Answer

Float spring on tecumseh Carb.

Ok, that pin is the needle valve. It should move freely, and the spring should attach it to the float. When the carburetor bowl is full, the float pushes that pin up to shut off the gas flowing into it. Otherwise, it would continue to dump fuel into it until it overflows, and you would have gas all over. The engine draws gas through the jet in the bottom of sump that you see sticking into the bottom of the bowl(this likes to get plugged up and keep your engine from running) The spring just kind of sits in there so that if the float moves, it will pull down the pin as it moves.

Dec 19, 2009 | Yard Machines Tecumseh 148cc Front Tine...

1 Answer

Carb mod hsk600 keeps leaking fuel have replaced needle and seat twice.still fills bowel and overflows..float appears ok.. not sure how spring is supposed to attach to foat ?

the spring is just to hold the needle in place, it just hangs there, I would suggest you check the float for seepage, if its one of the older metal ones its likely leaging gas into it and sinking, causing your flooding situation. Something else to sheck is that you have theseat installed correctly, Remember the ridges on the seat piont away from the needle. and remeber to set the float hight level..

Dec 19, 2009 | Yard Machines Tecumseh 148cc Front Tine...

1 Answer

Flooding in do I check the float?

Take the carb off and remove the screws that hold the float on. Once you have that apart, the float should be pretty obvious. Toward the back of the float (where it hinges) there is a small spring and a pin. Orientate the carb in it's normal position the float should be freely in the down position (this is when fuel enters the carb.) the pin should be pushed up. Now, push the float up (this is when fuel stops coming into the carb). The pin should fall. There should be some tension (very little) that makes the float want to return to the down position. If anything is out of order, order a carb rebuild kit. If the carb is flooding, this means that the float is getting stuck in the down (open) positon and not floating. This happens very often with older floats. Newer ones are plastic and won't get fuel logged or covered in suit. Let me know if this helps and what happens. Good luck

Btw, I’m available to help over the phone in case u need at

Sep 27, 2009 | Craftsman 20 hp 42 in. Deck Lawn Tractor -...

1 Answer

Tecumseh 17.5 hp ohv engine won't start

check valve clearance. if ok you going have change carb.sometimes i rebuild a carb everthing seam ok but carb wont work right so i have get a new carb and it works fine evertime

Jul 20, 2009 | Tecumseh Horizontal Tiller Engine 8 Hp, 1"...

1 Answer

Float was sticking ,now will only run if i feed it

Here is a website that will tell you where to look for your particular engine number and how to obtain original tecumseh parts. good luck with it. if you need any other assistance please get back. i really do want to help you get your tiller running again.

May 27, 2009 | Troy Bilt, Tuffy, Rear - Tine Tiller, 4.0...

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